diff -r 13ca3810a105 -r cc9b6e64027c hgext3rd/topic/stack.py
--- a/hgext3rd/topic/stack.py	Thu Sep 12 15:22:50 2019 +0700
+++ b/hgext3rd/topic/stack.py	Thu Sep 12 15:38:11 2019 +0700
@@ -73,10 +73,10 @@
         self._revs = trevs
 
     def __iter__(self):
-        return iter(self.revs)
+        return iter(self.indexedrevs)
 
     def __getitem__(self, index):
-        return self.revs[index]
+        return self.indexedrevs[index]
 
     def __nonzero__(self):
         return bool(self._revs)
@@ -84,7 +84,7 @@
     __bool__ = __nonzero__
 
     def index(self, item):
-        return self.revs.index(item)
+        return self.indexedrevs.index(item)
 
     @util.propertycache
     def _dependencies(self):
@@ -138,7 +138,7 @@
         return deps, rdeps
 
     @util.propertycache
-    def revs(self):
+    def indexedrevs(self):
         # some duplication/change from _orderrevs because we use a post
         # processed dependency graph.